Drillbit holder

This is to hold drillbits from 1/16 to 1/2 in increments of 64ths. I printed this in PLA, with very fast settings, so my print was rough, but still functional. On my printer the holes came out slightly undersized, so had to be drilled out.

Edit: I made some improvements to this. the openscad code was duplicating the 1/4" bit. I expanded the holes a little bit, but not enough that I didn't have to still drill them. To make drilling the holes easier, and putting in and removing the bits, I hollowed out the bottom (and flipped it over, so it doesn't need support. Also, I had issues with warping, so I rounded the corners. It's such a wide print that it still warps a little, but not unsuitably so.